نتایج جستجو برای: light interception

تعداد نتایج: 401071  

2016
Jian Jiao Derong Su Yadong Wang

Estimating canopy interception of water by plants during rainfall or sprinkler irrigation is a critical step for evaluating water-use efficiency. Most existing experimental studies and mathematic models of canopy interception have paid little attention to the interception losses of water by herbaceous plants. To better understand the canopy interception processes of herbaceous plants and to est...

Journal: :Remote Sensing 2015
Yongjiu Guo Ling Zhang Yehui Qin Yan Zhu Weixing Cao Yongchao Tian

Canopy structural parameters and light radiation are important for evaluating the light use efficiency and grain yield of crops. Their spatial variation within canopies and temporal variation over growth stages could be simulated using dynamic models with strong application and predictability. Based on an optimized canopy structure vertical distribution model and the Beer-Lambert law combined w...

Journal: :Annals of botany 2014
Tsu-Wei Chen Michael Henke Pieter H B de Visser Gerhard Buck-Sorlin Dirk Wiechers Katrin Kahlen Hartmut Stützel

BACKGROUND AND AIMS Maximizing photosynthesis at the canopy level is important for enhancing crop yield, and this requires insights into the limiting factors of photosynthesis. Using greenhouse cucumber (Cucumis sativus) as an example, this study provides a novel approach to quantify different components of photosynthetic limitations at the leaf level and to upscale these limitations to differe...

2006
A. M. J. Gerrits H. H. G. Savenije L. Hoffmann

In hydrological models, evaporation from interception is often disregarded, combined with transpiration, or taken as a fixed percentage of rainfall. In general interception is not considered to be a significant process in rainfallrunoff modelling. However, it appears that on average interception can amount to 20–50% of the precipitation. Therefore, knowledge about the process of interception is...

2003
Philip A. Branch

This paper describes the state of Lawful Interception of the Internet and compares it with Lawful Interception of access networks. Lawful Interception is the process of secretly intercepting communications between parties of interest to Law Enforcement agencies. Internet interception is both more difficult and much more immature than access network interception. Refusal by the main standards bo...

Journal: :ISPRS Int. J. Geo-Information 2017
Liyu Tang Dan Yin Shuwei Chen Chongcheng Chen Hongyu Huang Ding Lin

Virtual geographic environments (VGEs) have been regarded as an important new means of simulating, analyzing, and understanding complex geological processes. Plants and light are major components of the geographic environment. Light is a critical factor that affects ecological systems. In this study, we focused on simulating light transmission and distribution within a three-dimensional plant c...

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